Summary statistics for natl1974 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 2,029,150 4 0 4 4 shipnum | 0 reparea | 0 rectype | 2,029,150 1.204885 .4036175 1 2 restatus | 2,029,150 1.234827 .4948887 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 2,029,150 4.622745 2.398297 0 9 stsubres | 2,029,150 49.74777 24.4039 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 2,029,150 4.642845 2.389688 1 9 stsubocc | 2,029,150 49.95657 24.30318 11 95 csex | 2,029,150 1.486533 .4998187 1 2 birattnd | 2,029,150 1.016367 .1851022 1 4 frace | 2,029,150 1.870171 2.292166 0 9 -------------+--------------------------------------------------------- mrace | 2,029,150 1.248084 .7846357 0 9 crace | 2,029,150 1.248782 .746563 0 8 crace3 | 2,029,150 1.337525 .7342993 1 3 dmage | 2,029,150 24.41051 5.332855 10 49 mage36 | 2,029,150 11.41138 5.331039 1 36 -------------+--------------------------------------------------------- mage15 | 2,029,150 11.57832 3.474221 1 17 mage12 | 2,029,150 8.222124 1.630699 1 13 mage8 | 2,029,150 3.484507 1.105901 1 8 mage7 | 2,029,150 3.483972 1.103956 1 7 mage6 | 2,029,150 2.487891 1.096884 1 6 -------------+--------------------------------------------------------- nlbnl | 2,029,150 2.983165 11.42103 0 99 nlbnd | 2,029,150 4.930252 17.15595 0 99 nlbd | 2,029,150 3.970609 15.7418 0 99 dtotord | 2,029,150 3.816423 12.27107 1 99 totord9 | 2,029,150 2.344241 1.714169 1 9 -------------+--------------------------------------------------------- dlivord | 2,029,150 3.640299 12.17449 1 99 livord9 | 2,029,150 2.200659 1.61215 1 9 livord8 | 2,029,150 2.165939 1.48785 1 8 livord7 | 2,029,150 2.138961 1.395525 1 7 livord6 | 2,029,150 2.090113 1.259017 1 6 -------------+--------------------------------------------------------- livord3 | 2,029,150 1.601692 .5208482 1 3 dfage | 2,029,150 34.86197 22.43485 10 99 fage11 | 2,029,150 4.818691 2.412372 1 11 dbirwt | 2,029,150 3325.42 701.7036 227 9999 birwt12 | 2,029,150 7.121579 1.240439 1 12 -------------+--------------------------------------------------------- birwt3 | 2,029,150 1.92932 .268645 1 3 dplural | 2,029,150 1.01911 .1395551 1 5 plural3 | 2,029,150 1.019087 .1391162 1 3 plural2 | 2,029,150 1.018771 .1357168 1 2 birmon | 2,029,150 6.617692 3.423869 1 12 -------------+--------------------------------------------------------- birday | 2,029,150 15.74037 8.812658 1 99 lmpmon | 2,029,150 24.81725 34.57036 1 99 lmpday | 2,029,150 42.32943 37.93583 1 99 lmpyr | 0 dgestat | 2,029,150 42.4129 29.66595 0 99 -------------+--------------------------------------------------------- gestat10 | 2,029,150 6.142186 3.302737 0 10 gestat3 | 2,029,150 1.747396 .944979 0 3 dmeduc | 2,029,150 29.94986 32.61717 0 99 meduc14 | 2,029,150 6.439838 3.954037 0 14 meduc6 | 2,029,150 2.440962 1.609704 0 6 -------------+--------------------------------------------------------- dfeduc | 2,029,150 37.98547 37.1367 0 99 feduc14 | 2,029,150 7.333672 4.648396 0 14 dlegit | 2,029,150 3.136226 3.137092 1 9 legit3 | 2,029,150 .8087731 .5890712 0 2 monprec | 0 -------------+--------------------------------------------------------- mpre10 | 2,029,150 2.26807 2.265545 0 10 mpre6 | 2,029,150 1.850725 1.350674 0 6 llbmon | 2,029,150 47.73149 37.896 1 99 llbyr | 2,029,150 76.65992 7.874899 35 99 disllb | 2,029,150 471.1747 393.6204 0 999 -------------+--------------------------------------------------------- isllb17 | 2,029,150 5.867505 6.820353 0 21 isllb10 | 2,029,150 3.011184 3.418299 0 10 isllb8 | 2,029,150 2.44413 2.73603 0 8 lfdmon | 2,029,150 74.98274 19.38765 1 99 lfdyr | 2,029,150 78.6351 5.745055 0 99 -------------+--------------------------------------------------------- dlfd | 2,029,150 755.0248 201.591 0 999 dterm | 2,029,150 479.8147 401.4958 0 999 term9 | 2,029,150 3.050386 3.290231 0 9 outcome | 2,029,150 .6553843 .7607967 0 3 mplbir | 2,029,150 28.83796 15.76042 1 99 -------------+--------------------------------------------------------- nprevis | 2,029,150 41.26774 38.69092 0 99 legitstrflg | 2,029,150 .7087145 .4543549 0 1 educstrflg | 2,029,150 .7857798 .4102804 0 1 lmprflg | 2,029,150 .8149309 .3883537 0 1 monprerflg | 2,029,150 .8906345 .3120973 0 1 -------------+--------------------------------------------------------- llbrflg | 2,029,150 .8415351 .3651764 0 1 lfdrflg | 2,029,150 .8240815 .3807509 0 1 legitsmsar~g | 2,029,150 .4274751 .4947123 0 1 educsmsarflg | 2,029,150 .4887406 .4998733 0 1 congenrflg | 2,029,150 .9116729 .2837701 0 1 -------------+--------------------------------------------------------- nprevisrflg | 2,029,150 .6354961 .4812909 0 1 injuryrflg | 2,029,150 .7746362 .4178218 0 1 legitstoflg | 2,029,150 .7126003 .4525497 0 1 educstoflg | 2,029,150 .7869561 .4094585 0 1 lmpoflg | 2,029,150 .8166079 .3869877 0 1 -------------+--------------------------------------------------------- monpreoflg | 2,029,150 .8944105 .3073116 0 1 llboflg | 2,029,150 .8430742 .3637309 0 1 lfdoflg | 2,029,150 .8253574 .3796612 0 1 congenflg | 2,029,150 .9151645 .2786369 0 1 nprevisoflg | 2,029,150 .6370751 .4808436 0 1 -------------+--------------------------------------------------------- injuryoflg | 2,029,150 .777259 .416086 0 1 recwt | 2,029,150 1.562541 .4960733 1 2 nprev28 | 2,029,150 7.597181 7.112113 0 28 by Jean Roth , jroth@nber.org , 3 Jan 2016